Unique hues, as recently determined by 40 ob- servers using Munsell color chips, have been compared to published information on focal hues. While there is good agreement if the case of three hues, there is a significant disagreement(nearly 4 Munsell hue steps)in the case of green. An experiment was performed using mostly identical observers, identical color chips, and identical viewing con- ditions to have 40 observers determine their focal green hue.
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